EP0383068A1 - Bench for testing vehicular driving performance - Google Patents
Bench for testing vehicular driving performance Download PDFInfo
- Publication number
- EP0383068A1 EP0383068A1 EP90101424A EP90101424A EP0383068A1 EP 0383068 A1 EP0383068 A1 EP 0383068A1 EP 90101424 A EP90101424 A EP 90101424A EP 90101424 A EP90101424 A EP 90101424A EP 0383068 A1 EP0383068 A1 EP 0383068A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- belt
- drums
- mounting section
- tread
- vehicular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0072—Wheeled or endless-tracked vehicles the wheels of the vehicle co-operating with rotatable rolls
- G01M17/0074—Details, e.g. roller construction, vehicle restraining devices
Definitions
- the tread mounting section may receive front and rear wheels of the automotive vehicle.
- the tread mounting section may receive left and rear wheels of the automotive vehicle.
- the tread mounting section may receive all four wheels of four wheeled vehicle.
- these water supply ports 22 are connected to a water supply line which is, in turn, connected to a water source so as to supply the pressurized water.
- a draingage (not shown) is formed along the periphery of the slider plate 17 and is also associated with the lubricating fluid layer 21 for collecting and draining part of water in the lubricating fluid layer.
- sole rotary belt assembly 10 is provided.
- the front-left, front-right, rear-left and rear-right wheels 30FL, 30FR, 30RL and 30RR are mounted on the sole belt assembly. Therefore, the bench test can be performed substantially equivalent condition to that in the actual road test.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
Description
- The present invention related generally to a bench testing apparatus for testing driving performance of an automotive vehicle. More specifically, the invention relates to a testing apparatus which can allow bench testing of vehicular performance in various conditions.
- In the automotive industries, bench testing apparatus has been used for testing driving performance, such as an engine performance. One of the typical constructions of bench testing apparatus has been disclosed in Japanese Utility Model First (unexamined) Publication (Jikkai) Showa 53-28881. In the disclosed system, a pair of rotary drums are provided to be rotatingly driven by the engine driving torque transmitted thereto via vehicular driving wheels. The rotary drums are associated with a dummy load, such as a flywheel for modeling vehicular traveling resistance, and a dynamometer for measuring driving torque exerted on the rotary drums.
- Such bench testing apparatus is effectively used in the automotive industries or service stations because it allows testing of the vehicular performance within a factory. The result obtained from the bench test by means of such conventional bench testing apparatus is not in precisely coincidence with that obtained from an actual road test. Further particularly, the test results becomes becomes worse in terms of the precision in some kind of test to make such bench testing apparatus inapplicable.
- Therefore, it is an object of the present invention to provide a bench testing apparatus which may solve the problems encountered in the conventional testing apparatus.
- Another object of the invention is to provide a bench testing apparatus which is applicable for ordinarily vehicular performance test on various road conditions, such as up-hill, down-hill, undulated road and so forth.
- According to one aspect of the invention, a bench testing apparatus for an automotive vehicle, comprises:
a rotary belt assembly including a pair of rotary drums arranged in parallel and spaced apart relationship to each other, a metallic endless belt extending over the drums and wrapped therearound, and a supporting structure disposed at a tread mounting section of the belt and oriented between the drums, the supporting structure including a rigid and stationary support base and a non-compressible fluid layer formed between the supporting base and the belt for acting as hydrodynamic bearing for the belt;
a dummy load simulating vehicular traveling resistance, associated with at least one of the drums;
means for measuring driving torque exerted on the belt via a vehicular driving wheel,
the tread mounting section being oriented for receiving a vehicular wheel tread for forming a testing surface to receive the driving torque. - The tread mounting section may receive front and rear wheels of the automotive vehicle. Alternatively, the tread mounting section may receive left and rear wheels of the automotive vehicle. In the further alternative, the tread mounting section may receive all four wheels of four wheeled vehicle.
- According to another aspect of the invention, a bench testing apparatus for an automotive vehicle, comprises:
a plurality of rotary belt assemblies, each including a pair of rotary drums arranged in parallel and spaced apart relationship to each other, a metallic endless belt extending over the drums and wrapped therearound, and a supporting structure disposed at a tread mounting section of the belt and oriented between the drums, the supporting structure including a rigid and stationary support base and a non-compressible fluid layer formed between the supporting base and the belt for acting as hydrodynamic bearing for the belt;
a dummy load simulating vehicular traveling resistance, associated with at least one of the drums of each of the rotary belt assemblies;
means for measuring driving torque exerted on the belt of each of the rotary belt assemblies via a vehicular driving wheel,
the tread mounting section of each rotary belt assemblies being oriented for receiving a tread of each of vehicular wheels for forming a testing surface to receive the driving torque. - According to a further aspect of the invention, a method for bench testing of an automotive vehicle, comprises the steps of:
arranging a pair of rotary drums arranged in parallel and spaced apart relationship to each other;
providing a metallic endless belt over the drums and wrapped therearound
defining a tread mounting section on which a tread of vehicular wheel is mounted at an orientation between the drums;
providing a supporting structure for the tread mounting section of the belt, which supporting structure including a rigid and stationary support base;
forming a hydrodynamic bearing layer of a non-compressible fluid layer between the supporting base and the belt for acting as hydrodynamic bearing for the belt;
applying a dummy load simulating vehicular traveling resistance, for at least one of the drums;
placing automotive vehicle on the bench testing apparatus with placing the tread of vehicular wheel on the tread mounting section;
driving the vehicle on the apparatus; and
measuring driving torque exerted on the belt via a vehicular driving wheel. - The present invention will be understood more fully from the detailed description given herebelow and from the accompanying drawings of the preferred embodiment of the invention, which, however, should not be taken to limit the invention to the specific embodiment but are for explanation and understanding only.
- In the drawings:
- Fig. 1 is a section showing the preferred embodiment of a rotary belt assembly of a bench testing apparatus according to the present invention;
- Fig. 2 is a plan view showing first embodiment of layout of the preferred construction of the rotary belt assembly of Fig. 1;
- Fig. 3 is a plan view showing second embodiment of layout of the preferred construction of the rotary belt assembly of Fig. 1;
- Fig. 4 is a plan view showing third embodiment of layout of the preferred construction of the rotary belt assembly of Fig. 1;
- Fig. 5 is a plan view showing fourth embodiment of layout of the preferred construction of the rotary belt assembly of Fig. 1;
- Fig. 6 is a partially cut-out plan view of the preferred embodiment of the rotary belt assembly of Fig. 1; and
- Fig. 7 is a section taken along line VII - VII of Fig. 6.
- Referring now to the drawings, particularly to Fig. 1, the preferred embodiment of a bench testing apparatus includes a
rotary belt assembly 10, Therotary belt assembly 10 comprises a pair ofrotary drums metallic belt 13. The pair ofdrums predetermined clearance 14 therebetween. Thebelt 13 extends over the pair ofdrums - The
belt 13 is rotatably supported by means of a supportingstructure 15. The supportingstructure 15 comprises a rigid supportingbase 16 disposed between the pair ofdrums slider plate 17 is mounted on the supportingbase 16. Theslider plate 17 has anupper surface 18 mating with the lower surface 19 of the upper section 20 of the belt. A lubricatingfluid layer 21 is formed between themating surfaces base 16 and thebelt 13. The lubricating fluid layer 20 is formed of a non-compressible liquid state fluid, such as water. In order to form the lubricating fluid layer 20, a plurality ofwater supply ports 22 are formed through theslider plate 17. Thewater supply ports 22 are distributed over overall area of theslider plate 17 in order to achieve establishment of uniform fluid pressure in the lubricatingfluid layer 21. Though it is not shown in the drawings, thesewater supply ports 22 are connected to a water supply line which is, in turn, connected to a water source so as to supply the pressurized water. A draingage (not shown) is formed along the periphery of theslider plate 17 and is also associated with thelubricating fluid layer 21 for collecting and draining part of water in the lubricating fluid layer. - The water supply pressure, flow rate and so forth and the drain water flow rate may be adjusted so that the lubricating fluid layer is established with a predetermined pressure. One example of the water supply and drain structure to be employed in the preferred embodiment of the rotary belt assembly according to the present invention will be seen in Figs. 6 and 7. In the shown construction, the
slider plate 17 is formed with a plurality of transversely extendinggrooves 171 arranged in longitudinal alignment. On the other hand, adraingage groove 172 is formed along the peripheral edge of theslider plate 17. Along the outer peripheral edge of the drainage groove 173, a sealingmember 174 for establishing liquid tight seat between thebelt 13. As can be seen from Fig. 7, the sealingmember 174 is made of a felt material. The sealingmember 174 is biased toward thebelt 13 by means of a bias spring. - A plurality of
water supply ports 22 opens to the aforementioned transversely extendinggrooves 171 at the upper ends thereof. The lower ends of thewater supply ports 22 are connected to awater supply path 175 extending through theslider plate 17 and connected to a pressurized water source. Thedrainage groove 172 is connected to adrain line 176 for draining the water entering into thedrainage groove 172. - It should be noted that the water supply system and drain system applicable for the preferred embodiment of the
rotary belt assembly 10 set forth above has also been disclosed in the United States Patent 4,324,128, issued on april 13, 1982, to William J. Langer. The disclosure of the above-identified U. S. Patent is herein incorporated by reference for the sake of disclosure. - A dummy load, such as a flywheel, is applied for at least one of the
rotary drums - The
rotary belt assembly 10 constructed as set forth above can be used in various fashion as illustrated in Figs. 2 through 5 for acutally implementing bench test. - In the first arrangement, front-left, front-right, rear-left and rear-right rotary belt assemblies 10FL, 10FR, 10RL and 10RR are provided independently for respective of front-left, front-right, rear-left and rear-right wheels 30FL, 30FR, 30RL and 30RR, as shown in Fig. 2. The
rotary belt assemblies 10 are so arranged that the wheels 30FL, 30FR, 30RL and 30RR of avehicle 32 are placed respective positions where the supportingstructure 15 is provided. - In such arrangement, respective of the rotary belt assemblies 10FL, 10FR, 10RL and 10RR are associated with mechanisms which perform adjustment of elevation of the associated rotary belt assemblies so that the elevation of belt surfaces on which the vehicular wheels are placed can be adjusted independently on each other. Therefore, with the shown construction, undulated road, up-hill, down-hill and so forth can be simulated in addition to the simulation of the flat road.
- In the second arrangement, front and rear rotary belt assemblies 10F and 10R are provided in laterally parallel relationship to each other, as shown in Fig. 3. The front wheels 30 FL and 30FR are placed on the front rotary belt assembly 10F. On the other hand, the rear wheels 30RL and 30 RR are placed on the rear rotary belt assembly 10R. Each of the rotary belt assemblies 10F and 10R are associated with the height adjusting mechanism for adjusting the height level of the belt surface on which the vehicular wheel is mounted. Therefore, similarly to the foregoing first arrangement, not only flat road, but also up-hill and down-hill road can be simulated.
- In the third arrangement, left and right rotary belt assemblies 10L and 10R are provided in longitudinally parallel relationship to each other, as shown in Fig. 4. The front-left and rear-left wheels 30FL and 30RL are placed on the left rotary belt assembly 10L and the front-right and rear-right wheels 30FR and 30RR are placed on the right rotary belt assembly 10R. In such case, by adjusting dummy load applied for respective of the left and right rotary belt assemblies, the belt drive speed by the left and right driving wheels can be differentiated to each other. By this curve road can be simulated for testing operation of the differential gear unit.
- In the fourth arrangement, sole
rotary belt assembly 10 is provided. In such case, the front-left, front-right, rear-left and rear-right wheels 30FL, 30FR, 30RL and 30RR are mounted on the sole belt assembly. Therefore, the bench test can be performed substantially equivalent condition to that in the actual road test. - While the present invention has been disclosed in terms of the preferred embodiment in order to facilitate better understanding of the invention, it should be appreciated that the invention can be embodied in various ways without departing from the principle of the invention. Therefore, the invention should be understood to include all possible embodiments and modifications to the shown embodiments which can be embodied without departing from the principle of the invention set out in the appended claims.
Claims (9)
a rotary belt assembly including a pair of rotary drums arranged in parallel and spaced apart relationship to each other, a metallic endless belt extending over said drums and wrapped therearound, and a supporting structure disposed at a tread mounting section of said belt and oriented between said drums, said supporting structure including a rigid and stationary support base and a non-compressible fluid layer formed between said supporting base and said belt for acting as hydrodynamic bearing for said belt;
a dummy load simulating vehicular traveling resistance, associated with at least one of said drums;
means for measuring driving torque exerted on said belt via a vehicular driving wheel,
said tread mounting section being oriented for receiving a vehicular wheel tread for forming a testing surface to receive said driving torque.
a plurality of rotary belt assemblies, each including a pair of rotary drums arranged in parallel and spaced apart relationship to each other, a metallic endless belt extending over said drums and wrapped therearound, and a supporting structure disposed at a tread mounting section of said belt and oriented between said drums, said supporting structure including a rigid and stationary support base and a non-compressible fluid layer formed between said supporting base and said belt for acting as hydrodynamic bearing for said belt;
a dummy load simulating vehicular traveling resistance, associated with at least one of said drums of each of said rotary belt assemblies;
means for measuring driving torque exerted on said belt of each of said rotary belt assemblies via a vehicular driving wheel,
said tread mounting section of each rotary belt assemblies being oriented for receiving a tread of each of vehicular wheels for forming a testing surface to receive said driving torque.
arranging a pair of rotary drums arranged in parallel and spaced apart relationship to each other;
providing a metallic endless belt over said drums and wrapped therearound
defining a tread mounting section on which a tread of vehicular wheel is mounted at an orientation between said drums;
providing a supporting structure for said tread mounting section of said belt, which supporting structure including a rigid and stationary support base;
forming a hydrodynamic bearing layer of a non-compressible fluid layer between said supporting base and said belt for acting as hydrodynamic bearing for said belt;
applying a dummy load simulating vehicular traveling resistance, for at least one of said drums;
placing automotive vehicle on said bench testing apparatus with placing the tread of vehicular wheel on said tread mounting section;
driving the vehicle on said apparatus; and
measuring driving torque exerted on said belt via a vehicular driving wheel.
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14825/89 | 1989-01-24 | ||
JP14824/89 | 1989-01-24 | ||
JP1014824A JP2745626B2 (en) | 1989-01-24 | 1989-01-24 | Chassis dynamometer |
JP1014823A JP2893696B2 (en) | 1989-01-24 | 1989-01-24 | Chassis dynamometer |
JP14823/89 | 1989-01-24 | ||
JP1014825A JP2874171B2 (en) | 1989-01-24 | 1989-01-24 | Chassis dynamometer |
JP14822/89 | 1989-01-24 | ||
JP1014822A JP2874170B2 (en) | 1989-01-24 | 1989-01-24 | Chassis dynamometer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0383068A1 true EP0383068A1 (en) | 1990-08-22 |
EP0383068B1 EP0383068B1 (en) | 1994-05-04 |
Family
ID=27456287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90101424A Expired - Lifetime EP0383068B1 (en) | 1989-01-24 | 1990-01-24 | Bench for testing vehicular driving performance |
Country Status (4)
Country | Link |
---|---|
US (1) | US5136879A (en) |
EP (1) | EP0383068B1 (en) |
KR (1) | KR960014007B1 (en) |
DE (1) | DE69008568T2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105466701A (en) * | 2015-11-19 | 2016-04-06 | 北京特种机械研究所 | Continuous rotary table surface for pavement simulation |
CN108318210A (en) * | 2018-02-08 | 2018-07-24 | 中国汽车工程研究院股份有限公司 | Wheel driving unit and mobile road simulation system |
CN109342078A (en) * | 2018-09-28 | 2019-02-15 | 北京新能源汽车股份有限公司 | The economic testing method, apparatus and test device of electric four-wheel drive vehicle |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7213449B2 (en) * | 2003-08-07 | 2007-05-08 | Avl North America Inc. | Flat track chassis dynamometer |
KR100724799B1 (en) * | 2005-12-22 | 2007-06-04 | 한국항공우주연구원 | Apparatus and method for bearing stiffness test |
DE102010044058B4 (en) * | 2010-11-17 | 2018-06-28 | Aip Gmbh & Co. Kg | Belt unit and wind tunnel scale with belt unit |
DE102015204020A1 (en) * | 2015-03-05 | 2016-09-08 | Maha-Aip Gmbh & Co. Kg | Multi-configuration wind tunnel scale and method of retrofitting the wind tunnel scale |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4324128A (en) * | 1980-02-14 | 1982-04-13 | Mts Systems Corporation | Hydrodynamic support bearing for a belt on a tire testing machine |
DE3040355A1 (en) * | 1980-10-25 | 1982-05-27 | Vereinigte Flugtechnische Werke Gmbh, 2800 Bremen | Roller test facility for motor vehicles and chassis - has roller elements which are independently movable both in translation and in rotation |
US4455866A (en) * | 1982-09-22 | 1984-06-26 | Barrigar Robert H | Motor vehicle testing apparatus |
US4458527A (en) * | 1981-11-27 | 1984-07-10 | Eagle-Picher Industries, Inc. | Apparatus for measuring the rolling resistance of tires |
US4622848A (en) * | 1984-08-07 | 1986-11-18 | Sumitomo Rubber Industries, Ltd. | Flat belt type testing apparatus for measuring the cornering characteristics of a tire |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3520180A (en) * | 1967-11-08 | 1970-07-14 | Gen Motors Corp | Road simulator facility |
US3763699A (en) * | 1969-06-23 | 1973-10-09 | Jamesbury Corp | Gas supported free running belts for testing operational characteristics of engine driven vehicles supported on the belts |
-
1990
- 1990-01-23 KR KR1019900000767A patent/KR960014007B1/en not_active IP Right Cessation
- 1990-01-23 US US07/468,643 patent/US5136879A/en not_active Expired - Lifetime
- 1990-01-24 EP EP90101424A patent/EP0383068B1/en not_active Expired - Lifetime
- 1990-01-24 DE DE69008568T patent/DE69008568T2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4324128A (en) * | 1980-02-14 | 1982-04-13 | Mts Systems Corporation | Hydrodynamic support bearing for a belt on a tire testing machine |
DE3040355A1 (en) * | 1980-10-25 | 1982-05-27 | Vereinigte Flugtechnische Werke Gmbh, 2800 Bremen | Roller test facility for motor vehicles and chassis - has roller elements which are independently movable both in translation and in rotation |
US4458527A (en) * | 1981-11-27 | 1984-07-10 | Eagle-Picher Industries, Inc. | Apparatus for measuring the rolling resistance of tires |
US4455866A (en) * | 1982-09-22 | 1984-06-26 | Barrigar Robert H | Motor vehicle testing apparatus |
US4622848A (en) * | 1984-08-07 | 1986-11-18 | Sumitomo Rubber Industries, Ltd. | Flat belt type testing apparatus for measuring the cornering characteristics of a tire |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105466701A (en) * | 2015-11-19 | 2016-04-06 | 北京特种机械研究所 | Continuous rotary table surface for pavement simulation |
CN105466701B (en) * | 2015-11-19 | 2018-08-24 | 北京特种机械研究所 | Continuous rotary table top as test pavement simulating |
CN108318210A (en) * | 2018-02-08 | 2018-07-24 | 中国汽车工程研究院股份有限公司 | Wheel driving unit and mobile road simulation system |
CN109342078A (en) * | 2018-09-28 | 2019-02-15 | 北京新能源汽车股份有限公司 | The economic testing method, apparatus and test device of electric four-wheel drive vehicle |
CN109342078B (en) * | 2018-09-28 | 2021-02-26 | 北京新能源汽车股份有限公司 | Economical efficiency testing method, device and testing device for electric four-wheel drive vehicle |
Also Published As
Publication number | Publication date |
---|---|
EP0383068B1 (en) | 1994-05-04 |
DE69008568T2 (en) | 1994-08-18 |
DE69008568D1 (en) | 1994-06-09 |
KR960014007B1 (en) | 1996-10-11 |
KR900012093A (en) | 1990-08-03 |
US5136879A (en) | 1992-08-11 |
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